ast.h

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#ifndef ILANG_ILA_AST_AST_H__
#define ILANG_ILA_AST_AST_H__

#include <memory>
#include <string>

#include <ilang/ila/object.h>

namespace ilang {

// Forward declaration for host.
class InstrLvlAbs;

class Ast : public Object {
protected:
  typedef std::shared_ptr<InstrLvlAbs> InstrLvlAbsPtr;

public:
  // ------------------------- CONSTRUCTOR/DESTRUCTOR ----------------------- //
  Ast() {}
  Ast(const std::string& name) : Object(name) {}
  virtual ~Ast() {}

  // ------------------------- ACCESSORS/MUTATORS --------------------------- //
  bool is_ast() const { return true; }

  virtual bool is_expr() const { return false; }
  virtual bool is_func() const { return false; }

  inline InstrLvlAbsPtr host() const { return host_; }
  void set_host(const InstrLvlAbsPtr& host) { host_ = host; }

  // ------------------------- METHODS -------------------------------------- //

  virtual std::ostream& Print(std::ostream& out) const = 0;

private:
  // ------------------------- MEMBERS -------------------------------------- //
  InstrLvlAbsPtr host_ = nullptr;

}; // class Ast

} // namespace ilang

#endif // ILANG_ILA_AST_AST_H__